Critical evaluation of microextraction pretreatment techniques-Part 2: Membrane-supported and homogenous phase based...

Area of Science:

• Analytical Chemistry
• Separation Science

Background:

• This review continues the classification of microextraction techniques, following Part 1's focus on single drop and sorbent-based methods.
• Part 2 specifically addresses membrane- and homogenous phase-based microextraction, which are more recent advancements.

Purpose of the Study:

• To classify and evaluate emerging membrane- and homogenous phase-based microextraction techniques.
• To provide a comprehensive overview and aid researchers in navigating these newer microextraction methodologies.

Main Methods:

• Classification of membrane-based microextraction techniques.
• Classification of homogenous phase-based microextraction techniques.
• Evaluation of sensitivity and miniaturization aspects.

Main Results:

• Identified and categorized various membrane- and homogenous phase-based microextraction methods.
• Highlighted the increased sensitivity and "green" characteristics (due to miniaturization) of these newer techniques.
• Acknowledged the lack of an exhaustive classification currently available.

Conclusions:

• Membrane- and homogenous phase-based microextraction represent significant advancements in the field.
• These techniques offer improved sensitivity and environmental benefits, aligning with green chemistry principles.
• This review aims to improve orientation and understanding of these developing microextraction methods.